Vulnerability Description
ComfyUI is a modular diffusion model GUI, api and backend with a graph/nodes interface. Prior to 0.28.0, the /view endpoint served uploaded SVG files inline because image/svg+xml and related XML content types were absent from the dangerous-content-type handling, allowing stored cross-site scripting in the ComfyUI origin. This issue is fixed in version 0.28.0.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/Comfy-Org/ComfyUI/commit/96e0e3585b41e1417442eaa14ec57f7b4ffc
- https://github.com/Comfy-Org/ComfyUI/releases/tag/v0.28.0
- https://github.com/Comfy-Org/ComfyUI/security/advisories/GHSA-rj8c-c4p8-3c5h
FAQ
What is CVE-2026-56670?
CVE-2026-56670 is a vulnerability with a CVSS score of 8.2 (HIGH). ComfyUI is a modular diffusion model GUI, api and backend with a graph/nodes interface. Prior to 0.28.0, the /view endpoint served uploaded SVG files inline because image/svg+xml and related XML conte...
How severe is CVE-2026-56670?
CVE-2026-56670 has been rated HIGH with a CVSS base score of 8.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-56670?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.